Music-sheet winding and rewinding mechanism.



G. W. & R. PAULSON.

MUSIG SHEET WINDING AND REWINDING MEGHANISM.

APPLICATION FILED MAR. 10, 1911.

1,000,549, Patented Aug. 15, 1911.

2 SHEETSSHEET 1.

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G. W. & R. PAULSON.

MUSIC SHEET WINDING AND REWINDINGIVIEUHANISM.

APPLICATION FILED MAR. 10, 1911.

Patented Aug. 15, 1911.

2 SHEETSSHEET 2.

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UNIT D sTATEs PATENT OFFICE.

GUSTAF WM. PAULSON, OF BELMONT, AND RUDOLF PAULSON, 'OF BOSTON,MASSACHU- SETTS, ASSIGNORS 'IO HENRY F. MILLER & SONS PIANO COMPANY, ACORPORATION OF MASSACHUSETTS.

MUSIC-SHEET WINDING AND REWINDING MECHANISM.

Application filed March 10, 1911. Serial No; 613,613.

To all whom it may concern."

Be it known that we, Gus'rar \V. PAUL- soxz, a citizen of the UnitedStates, residing at Belmont, in the county of Middlesex, and RUooLrPAULSON, a citizen of the United States, residing at Boston, in thecounty of Suffolk, both in the State of Massachusetts, have invented newand useful Improvements in Music-Sheet Winding and Rewinding Mechanism,of which the following is a specification.

This invention relates to improvements in music sheet winding andrewinding mechanisms used in connection withmechanically- "o eratedmusical instruments and has for its ject to provide a mechanism of thisclass which shall be simple in construction, certain and reliable in itsaction, and in which.

the brakes for the tensioning of the music sheet as it passes from themusic spool to the take-up roller and vice versa shall become effectiveby merely the reversal of the direction of movement of the music sheetwithout the aid of any extraneous devices such as neumatics for settingand releasing the rakes such as are commonly employed.

I To these ends, the invention consists in the novel features ofconstruction and in the combination and arrangement of parts set forthin the following specification and particularly pointed out in theclaims.

Referring to the drawings: Figure 1 is a front elevation of a musicsheet winding and rewinding mechanism embodying our invention, partlybroken away. Fig. 2 is a side elevation of the mechanism viewed from theright hand side of Fig. 1. Fig. 3 is an enlarged detail side elevation,partly in section, of the brake for the music spool. Fig. 4 is anenlarged detail side elevation, partly in section, of the brake for thetakeup roller.

Like numerals refer to like parts throughout the several views of thedrawings.

- Tnthc drawings, 5 is music spool and 6 a take-up roller journaled inany usual or desired bearings in a frame 7 constituting also a supportfor a tracker 8 across which a mu-' sic sheet 9 travels from the musicspool to.

the take-up roller and vice versa. The music spool 5 is connected to bedriven by a shaft 10 and the take-up roller 6 is con- ;nected to bedriven-by a shaft 11, both of these shafts being journaled in suitablebearings in the frame 7 in any usual or desired manner.

A motor 12, which may be of any usual or desired construction, has adriving shaft 13 which is connected by any suitable mechanism to theshafts 10 and 11 to drive either of them at will in the proper directionto cause the movement of the music sheet 9 in one direction or theother, as desired. In the present instance, the shaft 13 is connect edto drive a clutch member 14 by a sprocketwheel 15 secured to said shaftand connected by a chain 16 to a sprocket wheel 17 formed on or. securedto the clutch member 14. The clutch member 14 is loosely mounted upon astationary shaft 18 in such a manner as to be capable of rotating andsliding longitudinally thereon.

The shiftable clutch member 14 may be thrown into engagement on one sidewith a clutch member 19 and on the other side with a clutch member 20,the former being provided with a'sprocket wheel 21 connected by a chain22 passing around an idler 23 to a sprocket wheel 24 secured to themusic spool shaft 10, while the clutch member is provided with asprocket wheel 25 connected by a chain 26 to a sprocket wheel 27 securedto the take-up roller shaft 11.

In the operation of the mechanism the clutch member 14: is constantlydriven in one direction by the motor 12 and is thrown into drivingengagement withthe clutch member 19 or the clutch member 20 by means ofa suitable clutch shifter 28 so as to cause the motor to drive the musicspool 5 in the direction of the arrow at or to cause the motor to drivethe take-up roller in the direction of the arrow 1) according to thedirection in which it is desired to have the music sheettravel.

The music spool 5 is provided with suitable braking means and thetake-up roll 6 is also provided with suitable braking means, in thepresent instance such braking means consisting of a brake drum 29loosely mounted upon the shaft 10 and havin a brake shoe 30 bearingtherea dust and a brake drum 31 loosely mounte upon the shaft 11 andhaving a brake shoe 32 hearing thereagainst. The brake shoe 30 ispreferably mounted upon a lever 33 fulcrumed on a pivot 34 and the brakeshoe 32 is preferably mounted on a lever 35 fulcrumed on a pivotSpecification of Letters Patent. Patented Aug. 10', 1911.

ot theratchet' its-point is held against; acci- I I ing either saidspool or said roller, l?

86. The brake shoes are held in engagement with their respective brakedrums preferably by a spring '87 connecting the levers 33 and 35 to eachother and provided with :1

- 5 screw-threaded adjusting rod 38 by means permitting relativerotation of the spool '5 2 andthe brake drum 29 in one direction, butlooking said spool and said brake drum against relative rotation in theopposite direction and by providing suitable means connecting the brakedrum 31 to the shaft 11 permitting vrelative-rotation of the takeuproller 6 and the brake drum 31 in one direction but looking said rollerand "said orake drum against relative rotation in the oppositedirection.- In other words, the means just referred to automaticallyconnects the spool to drive its braking means when the spool is rotatedin one direction, but disconnects the spool from its braking positedirection and similarly the roller is automatically ponnected to driveits braking means when said roller .is rotated in one direction, butdisconnected therefrom when said roller is rotated in the oppositedirection. For this purpose, we preferably employ the devices which Wewill now proceed to describe and which form the main feature of ourinvention. a

39 is a pawl ivotally mounted upon a collar 40 secur to the shaft 10 andprovided with a recess 41 in which said pawl is located, said pawl beingirranged to .cooperate with a ratchet cons Jti'ng ot' a series gageswith its ratchet todrive the same when the'pawl is above the shaftTlOand when once engagedwith one of pinsi42 flde'ntal disengagement fromthe pin' by"the i aerate the end of the pawl is beveled,

sliown,"so that when in driving engagement and located below the shaftit will be under stood that it will remain engaged as long as the poweris applied to rotate the collar 40 upon which the pawl is mounted. Asstated, the pawl is pre erably gravity-operated 311 order that when thereversal of direction means when said spool is rotated in the opof pins42 projecting from the face of the of motion of the music sheet takesplace a short period of time shall elapse before the brake drum 29starts to rotate.

A pawl 43 is pivoted on a collar 44 se' cured to the shaft 11 andlocated in a recess 45 provided in said collar and into this recess aseries of pins 46 project, said pins constituting a ratchet with whichsaid pawl cooperates so that when the take-up roll 6 is rotated in onedirection, the brake drum 31 will be locked thereto and travel in unisontherewith, but upon a reversal of movement of the music sheet the pawlwill simply' travel idly over its ratchet, and the. brake' drum 31 willremain stationary. I Preferably, the pawl 43 is provided wit-h a longweighted arm 47 constitut-in a means actuated by centrifugal force to trow said pawl into engagement with its ratchet as soon as the take-uproller has started torotate in the proper direction. Except for thisdifl'erencein the operation of the pawls, the braking means for themusic spool' and the take-up roller operate in substantially the I samemanner. 90

It will be understood from the foregoing that the braking means for themusic spool 5 and the braking means for the take-up roller 6 becomeetlect-iveonly upon the rota tion of their respective brake drumsthrong; the medium of their pawls and ratchets it accordingly thetensioning of the music sheet is accomplished without the use of anypneumatics or other devices for throwing the brake shoes into and out ofcontact will: their respective brake drums, as has heretofore been thecase.

While it is desirable to provide bra means for the take-up roller ti, itis sential, and in many cases it is poss dispense entirely with thebraking me for the take-up roller and to equip only music spool'with abraking means operating as hereinbefore described. The rea for this isthat when the instrument is be g played the music leads off of the musicspcoi and, of course, needs to be properly ten sioned, whereas inrerolling the music sheet it is not essential that the sheet shall betensioned; v

' Having thus described our invention, what we claim and desire byLetters Patent to secure is: i

1. A music sheet winding and rewi'nding mechanism having, incombination, a music spool, a take-up roller, mechanism for drivby saidmechanism to wind the music slzcci ofi of said roller onto said spool,and means to automatically connect said roller to dIlVB I its saidbraking means when said roller is mechanism having, in combination, amusic spool, a take-up roller, mechanism for driving either said spoolor said roller, braking means for said spool including a. drum-and africtional device constantly acting thereon, braking means for saidroller including a drum and a frictional device constantly act- ,ingthereon, means to automaticallyponnect said spool to rotate its saiddrum when'said' spool is rotated in one direction, but disconnect saidspool from its drum when'said spool is rotated in the oppositedirection, and means to automatically connect said roller to its saiddrum when said roller is rotated in one direction, but disconnect saidroller from its drum when said roller is ro tated in the oppositedirection.

3. A music sheet winding and rewinding mechanism having, in combination,a music spool, a take-up roller, mechanism for driv-- ing either saidspool or said roller, braking means for said spool including a rotatablemember, braking means for said roller including a rotatable member,means connectin said spool to its said member permitting r ativerotation of said spool and its memher in one direction, but locking saidspool and its member against relative rotation in the oppositedirection, and means connccting said roller to its said memberpermitting relative rotation of said roller and its incur her in onedirection, but locking said roller and its member against relativerotation in the opposite direction.

A music sheet winding and rewiuding mechanism having in combination, amusicv spool. a take-up roller, mechanism for dri\'- ing either saidspool or said roller, braking means for said spool including a drum anda frictional device constantly acting thereon, and means toautomatically connect said spool to rotate said drum when said spool isrotated in one direction, but disconnect said spool from said drum whensaid spool is rotated in the opposite direction.

5. A music sheet winding and rewinding mechanism having, in combination,a music spool, a take-up roller, mechanism for driving either said spoolor said roller, braking means for said spool including a rotatablemember, braking means for said roller including a rotatable member, agravity actuated pawl andcotiperating ratchet connecting said spool toits said. member, and a centrifugally actuated pawl and co6perat ingratchet connecting said roller to its said mg'either said spool or saidroller, braking means for said spool including a brake drum and a brakeshoe acting thereon, brak ing means for said roller including a brake--drum and brake-shoe acting thereon, means yieldingly holding saidbrake-shoes in engagement with their respective brake-drums, a pawl andratchet forming an operative connection between said spool and its saidbrake-drum, and a pawl and ratchet forming an operative connectionbetween said roller and its said brake-drum, one of said ratchets withits cooperating pawl being reverse to the other.

7. A music sheet winding and rewinding mechanism having, in combination,a music spool, a take-up roller, mechanism for driving either said spoolor said roller, braking means for said spool including a brake drum anda brake shoe acting thereon, braking means for said roller including abrakedrum and brakeshoe acting thereon, 'a spring connecting saidbrake-shoes to each other and urging them into engagement withtheirrespective brake-drums, a pawl and ratchet forming an operativeconnection between said spool and its sai'd brakedrum, and a pawl andratchet forming an operative connection between said roller and its saidbrake-drum, one of said ratchets with its cooperating pawl being reverseto the other. 7

8. A music sheet winding and rewinding mechanism having, in combination,a music spool, a take-up roller, mechanism for driving either said spoolor said roller, braking means for said spool, and means to automaticallyconnect said spool to drive said braking means when said spool isrotated by the music sheet in being wound off of said spool onto saidroller, but disconnect said spool from said braking means when saidspool is rotated by said mechanism to wind the music sheet off of saidroller onto said spool.

9. A music sheet winding and rewinding' mechanism having, incombination, a music spool, a take-up roller, mechanism for drivingeither said spool or said roller, braking means for said spool includinga drum and a frictional device constantly acting there- 10 said roller,but locking 15 mechanism having, .in combination, a music spool, atake-up roller, mechanism for drivin'g'either said spool or said roller,braking means for said spool including a rotatable witnesses.

GUSTAF WM. PAULSON. RUDOLF PAULSON. \Vitnesses:

Lows A. Jones, J AMES H. LINDSAY.

'Gopies of this patent may be obtained for five cents each, byaddressing the Commissioner of Patents,

- I Washington, D. G.

